Educated at Trinity College, Cambridge, Marshall became Vicar of Swallowcliffe, in Wiltshire. In 1845, he was received into the Roman Catholic Church in Lord Arundell's chapel at Wardour Castle. He subsequently published satirical (mostly pseudonymous) material on the Anglican principle of comprehensiveness and a trenchant criticism of opponents of the First Vatican Council, especially Old Catholics. Specific Anglican tenets he singles out for attack include the Branch theory and the sacramental validity of Anglican ministry and holy orders.
His elder brother Thomas William Marshall (1818-1877) was also a Roman Catholic convert and controversialist .
- Pseud., The Comedy of Convocation in the English Church, in Two Scenes, edited by Archdeacon Chasuble. (1868)
- Pseud., The 'Old Catholics' at Cologne, by Herr Fröhlich (1873)
- The Oxford Undergraduate of Twenty Years Ago (1874)
- The Comedy of English Protestantism in Three Acts: Scene--Exeter Hall, London, Time--the Summer of 1893 (1894)
- The Comedy of Convocation of the English Church (1868)
- The 'Old Catholics' at Cologne (1873)
- "Arthur Featherstone Marshall". Catholic Encyclopedia. New York: Robert Appleton Company. 1913. http://www.newadvent.org/cathen/09718a.htm.